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Amendments to the Extended Analytical Wall Function for Turbulent High Prandtl Number Flows

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.780
pages 393-396

Kazuhiko Suga
Department of Mechanical Engineering, Osaka Prefecture University, Gakuen-cho 1-1, Naka-ku, Sakai, Osaka 599-8531, Japan

Аннотация

The extended version of the analytical wall-function for rough wall turbulence is further developed. In order to model thermal boundary layer of high Prandtl number fluid flows, such as water, and engineering oil flows, a correct near-wall limiting profile of the turbulent viscosity needs to be linked for the analytical integration process. It is confirmed that the presently proposed version of the analytical wall-function performs very well for predicting turbulent high Prandtl number thermal flows at Pr ≤ 4 × 104 for smooth wall cases, and at least at Pr ≤ 4 × 10 for rough wall cases.

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